# QuickHashIntSet::__construct

(PECL quickhash >= Unknown)

QuickHashIntSet::__construct — Creates a new QuickHashIntSet object

### Beschreibung

public QuickHashIntSet::__construct(int `$size`, int `$options` = ?)

This constructor creates a new QuickHashIntSet. The size is the amount of bucket lists to create. The more lists there are, the less collisions you will have. Options are also supported.

### Parameter-Liste

`size`
  The amount of bucket lists to configure. The number you pass in will be automatically rounded up to the next power of two. It is also automatically limited from `4` to `4194304`.
`options`
  The options that you can pass in are: `QuickHashIntSet::CHECK_FOR_DUPES`, which makes sure no duplicate entries are added to the set; `QuickHashIntSet::DO_NOT_USE_ZEND_ALLOC` to not use PHP's internal memory manager as well as one of `QuickHashIntSet::HASHER_NO_HASH`, `QuickHashIntSet::HASHER_JENKINS1` or `QuickHashIntSet::HASHER_JENKINS2`. These last three configure which hashing algorithm to use. All options can be combined using bitmasks.

### Rückgabewerte

Returns a new QuickHashIntSet object.

### Beispiele

Beispiel #1 QuickHashIntSet::__construct() example

`<?php
var_dump( new QuickHashIntSet( 1024 ) );
var_dump( new QuickHashIntSet( 1024, QuickHashIntSet::CHECK_FOR_DUPES ) );
var_dump(
new QuickHashIntSet(
1024,
QuickHashIntSet::DO_NOT_USE_ZEND_ALLOC | QuickHashIntSet::HASHER_JENKINS2
)
);
?>`
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